Data->get( $name ); if ( MWF_Functions::is_empty( $value ) ) { return; } if ( preg_match( '/^[0-9A-Za-z]+$/', $value ) ) { return; } $defaults = array( 'message' => __( 'Please enter with a half-width alphanumeric character.', 'mw-wp-form' ), ); $options = array_merge( $defaults, $options ); return $options['message']; } /** * Add setting field to validation rule setting panel. * * @param numeric $key ID of validation rule. * @param array $value Content of validation rule. * @return void */ public function admin( $key, $value ) { ?> get_name() ], 1 ); ?> name="[validation][][get_name() ); ?>]" value="1" />